Reversing mechanism



June 5, 1923.

O. J. MARsHIcK ET AL REVERS'ING MEcHANIsM 3 Shees-Sheet 1 Filed Nov. 15 1920.

June 5, 1923. 1 1,457,312

o. J. .MARsHlcK ET AL REVERS ING MECHANISM Filed Nov. 15 1920 3 Sheets-Shee'f E June 5, 1923. 1,457,312

- O. J. MARSHICK ET AL REVERS ING' MECHANI SM Filed Nov. 15 1920 3 sheets-sheet S W A TTORNE Y.

Patented June 5, 1.923. i

vUru'rau sTATs -1,457,31z -PATr-:NT OFFICE;

omvrm .1. mansnrcx AND Enwm L.` ca'osnY, or' DE'rRoI'r, niemam.

;navnasme MECHANISM.

Applioation'led November 15, 1920. Serial Il'o. 424,088.

skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings; which form of the component parts of oni' improved re- ,versing mechanism;

a art of this specification. w

'his 'invention relates tol reversing mechanism for'electric furnaces in particular, though adapted with. little change for such analogous uses as effecting the oscillation of rotation of a` churn, washing machine or tumbling barrel.. It has -for its objectthe provision of means for automatically reversing the direction of rotation of the drum after it has travelled through a certain angular space, adjustable according to the needs and circumstances of the particular use, if need be, whilethe drum is'in motion.

In the drawings: Figura 1 is an end elevational view of our improved mechanism, applied to a rotatable furnace drum; o

Figure 2 is a large scale elevation with certain of the parts broken away or sectioned,

Figure 3 is a large scale sectional elevation of our improved reversing mechanism, taken along the line 3-3 of Fig. 2, and

Figura' 4 is a detailed elevation of several of the contact members, employed in our reversing mechanism. A

- 1 represents the rotatable furnace drum,

-whose encircli-ng track portions 2 rest upon the supporting rollers 3, thus taking the weight of the drum and its contents off from' the connectin means between it and our' reversing mec anism now to be described. Peripherally disposed about the drum, is a' friction band or annular member 4, with which, in case gear teeth are einployed, mesh' the teeth of the motor-' driven gear-wheel 5, which, like the nearby rollers 3, is rotatably supportedl in the base 6. Near the bottom o f the furnace 'drum is 'rotatably mounted the shaft 7 carrying the gear wheels 8' and 9 .the former of which operatively engages the annular band 4 on the furnace drum in a way to reflect,.in its tory movement of `the drum. The smaller gear wheel 9 lies within a slight irregularity in the shell or casing 10, with its teeth meshing with those of the large gear wheel 11 which is rotatably mounted on the shaft 12. From the forward face of the gear wheel 1'1 projects the pin or stud 13, which extends' forwardly toward the gear 'member 15, in which are located a plurality of spaced holes 14, in an ofwhich may engage the springproJecte pins 16 and 17 which are'carried on the ends of the arms 18 and 19 respec- .tively. Of these the arm 18 is keyed to th sleeve 20 on the shaft 12, whereas the arm 19 is similarly keyed to the outer sleeve 21, which is rotatable' with respect to the sleeve 18. Each of these sleeves carries on its inner end a Companion and' correspondingly extending arm, as 22 and 23, so that, as shown in F igure 3, particularly, the outer arm 19, sleeve 21 and the inner arm 23 form a U- shaped unit. The correspondin parts 18, 20 and 22 are-there shown only m end section, because, as brought out in Figures 1 and 2, the arms are there shown in position .nearly at ri ht angles to one anotlher. Thus, as the angu ar, distance between the two external armsl18 and 19, and their corresponding internal' arms 22 and 23,' is varied a'ccording to their position' relatively to the series of holes 14, there are constituted ,on

`the wheel 15 projecting stops 'which limit the possible oscllatory path of the stud 13 on the gear wheel 11 with reference to the gear wheel 15, which, if the .gear wheel 11 continues to move, must thereafter also move with it. If it does so, the engagement of its teeth with the teeth of the lowergear -wheel 31 causes its rotation and consequently that of the shaft 32, o'n the forward end of which it is mounted, and which carries on its rear end the gear wheel 33 which meshes with the .gear wheel 34 on the shaft 35. This latter shaft carries on its forward end (the left end as shown in Fi re 3) the several con- ,tact blocks 36., whic as the shaft rotates, 'are swung into 'contact with one or the other of the spring-su ported terminal blocks 3.7 and 38, each of w* ich is conneoted'b'y suitable wiring (which it is not thought necessary to here show with the motor by which the rotation o the' drum 1 is eifected. The reland 38 the toothed portion of the largegear-wheel 11 within the casing has reached the extreme of'its possible swing, and whatever slight further movement results is what `ing the gear-wheel 11 within theicasmg in is known. as '*coas'ting Qand merey results in the drum conta t 36 being move sli htly further onto' the lcontact fingers 37. an 38. The makingof this contact sets up a reverse current path through the motor from that under which 'it has bee'n acting, and the turning of the train of gear-Wheels 1n the' opposite direction not only results in swingthe opposite direction so". that its stud 13 will' encounter the otherlimiting arm set from that as regards its 'relative position, but, as well, throws the Wheel carrylng the' `cmtact-block 86 in motion'towardthe other spring-held contact pieces, as 38, thus once more reversing the direction of the current through the motor Windings.

What We claim i's:

1. In a reversing mechanism, -in combination With a rotatable gear Wheel operatively connected With a rockable furnace drum, a

With said rst-named gear wheel, adapted to be rocked by. the movement thereof into contact of 'a projection thereon against one or the other of said oppositely disposed contact terminale. f

2. In combination Withl a plurality of op- ,positely disposed contact terminals, an os- 'cillatory contactpiece adapted to engage one or the other of said contact terminals when moved in either direction from neutral po- P sition, a plurality of rotatable gear Wheels I connecting' said oscillatory contact piece with a rockable furiiace drum, and adjustable limiting members adapted to interfere with the rotation of one of said gear wheels'when the end of its been reached.,

3; The combination, with av connection to a source of rotative actuation, of a rotatable length of the path of travel thereof may be tact ,terminals, and means operatively connected 'With said rotatable 'gear member.

adapted to be rocked in consonance With the directionand degree of oscillation' thereof into contact. with. one orthe other of-said contact terminals.. p

4:. In combination Withfa rotatable shaft desired path of travel hasV .gear member, a, plurality of independently adjustable limiting members Whereby the' regulated, a-pair of opposit'ely disposed con- I opei'atively connected with a rockable furnace drum, a pair of oppositely disposed terminalls, an oscillatory contact member opera-i tively connected with said rotatable shaft and adapted to be swung byv the actuati'ver movement received therefrom against one or the .other of said 'terminals,' a rotatable gear member 4with which said oscillatory contact member is connected, .and adjustable means adapted to act upon said rotatable gear member for regulating the degree of its I possible movement.

5. In combination With a plurali'ty'ofcontact terminals, an os'cil-latablecontact piece adapted to engage one or the other of said te'rminals when swung a sufiicient distance in either` direction 'from its intermediate position, means for operatively connecting said ,oscillatable contact, piece with a rotatable furnace drum, vand means capable of adjustment relatively to 'one another andto certain of said last-mentioned means Whereby the 'degree of possible movement of 'certain of'said parts may be-regulated.

In testimony -whereof, we sign this. specifiation'in the presence' of .two witnesses;

. CLIVERv J. MARSHICK.

EDWIN L. oRosB.Y.- 1,

`Witnesses`=l -Einme L.- KAvAn-AUGH,

PAULIN BmNnoY. 

